package cn.edu.seu.herald.informationplatform.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class AuthenticationFilter implements Filter {

	@Override
	public void init(FilterConfig config) throws ServletException {}

	@Override
	public void destroy() {}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		HttpServletRequest httpRequest = (HttpServletRequest) request;
		HttpServletResponse httpResponse = (HttpServletResponse) response;
		Object commonUserAuth =
				httpRequest.getAttribute(UserAuthorized.COMMON_USER_AUTH_BEAN);
		Object leagueUserAuth =
				httpRequest.getAttribute(UserAuthorized.LEAGUE_USER_AUTH_BEAN);
		
		if (commonUserAuth == null && leagueUserAuth == null) {
			httpResponse.sendError(401);
			return;
		}
		
		chain.doFilter(request, response);
	}

}
